Electrodeposition of sustainable fluoridated hydroxyapatite coatings on 316L stainless steel for application in bone implant

Green Processing and Synthesis

article

Pham Thi Nam¹  Nguyen Thi Thom¹  Nguyen Thu Phuong¹  Vo Thi Hanh¹  Nguyen Thi Thu Trang¹  Vu Thi Hai Van¹  Trinh Hoang Trung²  Tran Dai Lam³  Dinh Thi Mai Thanh¹ 

[1] Institute for Tropical Technology, Vietnam Academy of Science and Technology;University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology;Graduate University of Science and Technology, Vietnam Academy of Science and Technology

关键词: 316LSS;    electrodeposition;    fluoridated hydroxyapatite coatings (FHAp);    in vitro test;    SBF;   

DOI  :  10.1515/gps-2016-0064

来源: De Gruyter

【 摘 要 】

Fluoridated hydroxyapatite (FHAp) coatings were deposited on 316L stainless steel (316LSS) substrate by the electrodeposition method. Different concentrations of F – ion were incorporated into the apatite structure by adding NaF into the electrolyte solution. The coating was uniform and dense, with thickness of 9.6 µm, and F – ions were doped on HAp with mass percentage of 1.7%; F – concentration was 0.002 M. Results of IR, energy-dispersive X-ray (EDX), X-ray and scanning electron microscopy (SEM) analysis showed that the obtained coatings were single phase crystals of HAp, of a cylinder shape with average size of about 100 nm×30 nm, and characterized for the molecular structure FHAp. The in vitro test of 316LSS, HAp/316LSS and FHAp/316LSS materials in simulated body fluid (SBF) solution was realized with different immersion times. After 21 immersion days in SBF solution, the apatite crystals have a cactus-like shape, and they grow to form a thick block on the surface of FHAp/316LSS leading to the decrease of the corrosion current density during the immersion process in the SBF solution.

【 授权许可】

CC BY